[append]

Core/Src/stm32f1xx_it.c

 /**
   * @brief This function handles Hard fault interrupt.
   */
-#if 0
-void HardFault_Handler(void)
+__WEAK void HardFault_Handler(void)
 {
   /* USER CODE BEGIN HardFault_IRQn 0 */
 
     /* USER CODE END W1_HardFault_IRQn 0 */
   }
 }
-#endif
+
 /**
   * @brief This function handles Memory management fault.
   */